針對帶LCL 濾波的并網電壓源型逆變器提出了一種多環控制器。該控制器由內環
預測電流控制器、外環電壓矢量控制器及電壓指令補償器三部分組成。將該控制器應用于微電網中微型電源的逆變器中，可以有效調節負載端電壓，尤其是當系統中含不平衡和非線性負載時，均可以實現零靜態誤差。最后，給出了分布式電源單獨運行和聯網運行時的帶平衡、不平衡及非線性負載時的仿真分析。
Abstract: A multi-loop controller for gird-connected voltage source converters with LCL
filter is proposed in this paper. The controller consists of three segments – inner predictive current controller, outer voltage vector controller, and the command voltage modifier. The whole controller is applied to converters based DRs in microgrids, and regulate the load terminal voltage with zero steady-state error even under load unbalanced conditions and conditions with non-linear loads. Selected results from simulation studies conducted on the performance of the controller
under balanced, unbalanced and non-linear conditions both in island and grid-connected mode are presented.
關鍵詞：微電網；逆變器；多環控制器；不平衡；非線性負載
Key words: mirogrids; converters; multi-loop controller; unbalanced condition; non-linear
loads